<template>
  <div class="cart">
    <h4>全部商品</h4>
    <div class="cart-main">
      <div class="cart-th">
        <div class="cart-th1">全部</div>
        <div class="cart-th2">商品</div>
        <div class="cart-th3">单价（元）</div>
        <div class="cart-th4">数量</div>
        <div class="cart-th5">小计（元）</div>
        <div class="cart-th6">操作</div>
      </div>
      <div class="cart-body">
        <ul class="cart-list" v-for="cart in cartInfoList" :key="cart.id">
          <li class="cart-list-con1">
            <input
              type="checkbox"
              name="chk_list"
              :checked="cart.isChecked"
              @change="ChkList(cart)"
            />
          </li>
          <li class="cart-list-con2">
            <img :src="`${cart.imgUrl}`" />
            <div class="item-msg">
              {{ cart.skuName }}
            </div>
          </li>
          <li class="cart-list-con3">
            <div class="item-txt">{{ cart.sourceType }}</div>
          </li>
          <li class="cart-list-con4">
            <span class="price">{{ cart.cartPrice }}.00</span>
          </li>
          <li class="cart-list-con5">
            <a
              href="javascript:void(0)"
              class="mins"
              @click="Modify('jian', -1, cart)"
              >-</a
            >
            <input
              autocomplete="off"
              type="text"
              :value="cart.skuNum"
              minnum="1"
              class="itxt"
              @change="Modify('Modi', $event.target.value, cart)"
            />
            <a
              href="javascript:void(0)"
              class="plus"
              @click="Modify('jia', +1, cart)"
              >+</a
            >
          </li>
          <li class="cart-list-con6">
            <span class="sum">{{ cart.cartPrice * cart.skuNum }}</span>
          </li>
          <li class="cart-list-con7">
            <a class="sindelet" @click="deletes(cart.skuId)">删除</a>
            <br />
            <a href="#none">移到收藏</a>
          </li>
        </ul>
      </div>
    </div>
    <div class="cart-tool">
      <div class="select-all">
        <input
          class="chooseAll"
          type="checkbox"
          :checked="ischeckd"
          @change="checkboxAll"
        />
        <span>全选</span>
      </div>
      <div class="option">
        <a @click="deleteAll">删除选中的商品</a>
        <a href="#none">移到我的关注</a>
        <a href="#none">清除下柜商品</a>
      </div>
      <div class="money-box">
        <div class="chosed">已选择 <span>0</span>件商品</div>
        <div class="sumprice">
          <em>总价（不含运费） ：</em>
          <i class="summoney">{{ TotalPrice }}</i>
        </div>
        <div class="sumbtn">
          <router-link to="/Trade" class="sum-btn">结算</router-link>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import { throttle } from "lodash";
import { mapGetters } from "vuex";
export default {
  name: "ShopCart",
  mounted() {
    this.$store.dispatch("ShopCartacti");
  },
  computed: {
    // 获取购物车数据的计算属性
    ...mapGetters(["cartInfo"]),
    cartInfoList() {
      return this.cartInfo.cartInfoList || [];
    },
    //计算购物车总的价格
    TotalPrice() {
      let sum = 0;
      this.cartInfoList.forEach((item) => {
        sum += item.skuNum * item.cartPrice;
      });
      return sum;
    },
    // 全选操作的计算属性
    ischeckd() {
      //every遍历数组中的元素，当后面条件数组中的元素都满足的时候就返回真
      return this.cartInfoList.length != 0
        ? this.cartInfoList.every((item) => item.isChecked == 1)
        : false;
    },
  },
  methods: {
    //修改数量函数(加了节流)
    Modify: throttle(async function (tyle, value, cart) {
      var skuNum;
      if (tyle == "jia") {
        skuNum = value;
      } else if (tyle == "jian") {
        cart.skuNum <= 1 ? (skuNum = 0) : (skuNum = -1);
      } else if (tyle == "Modi") {
        if (value > 0) {
          cart.skuNum > value
            ? (skuNum = -parseInt(cart.skuNum - value))
            : (skuNum = parseInt(value - cart.skuNum));
        } else {
          skuNum = 0;
        }
      }
      try {
        // 修改成功
        await this.$store.dispatch("addTosuccessful", {
          skuId: cart.skuId,
          skuNum: skuNum,
        });
        this.$store.dispatch("ShopCartacti");
      } catch (error) {}
    }, 500),

    // 删除操作函数
    async deletes(skuId) {
      try {
        await this.$store.dispatch("Deletes", skuId);
        this.$store.dispatch("ShopCartacti");
      } catch (error) {}
    },

    //修改某一个产品的选中状态(加了节流)
    ChkList: throttle(async function (cort) {
      try {
        await this.$store.dispatch("ChkList", {
          skuId: cort.skuId,
          isCheckeds: Number(!cort.isChecked),
        });
        this.$store.dispatch("ShopCartacti");
      } catch (error) {}
    }, 1000),

    //删除选中的产品(加了节流)
    deleteAll: throttle(async function () {
      try {
        await this.$store.dispatch("deleteAllChecked");
        this.$store.dispatch("ShopCartacti");
      } catch (err) {}
    }, 1000),

    //全选按钮的函数(加了节流)
    checkboxAll: throttle(async function (event) {
      try {
        await this.$store.dispatch("checkboxAll", Number(event.target.checked));
        this.$store.dispatch("ShopCartacti");
      } catch (err) {}
    }, 1000),
  },
};
</script>




<style lang="less" scoped>
.cart {
  width: 1200px;
  margin: 0 auto;

  h4 {
    margin: 9px 0;
    font-size: 14px;
    line-height: 21px;
  }

  .cart-main {
    .cart-th {
      background: #f5f5f5;
      border: 1px solid #ddd;
      padding: 10px;
      overflow: hidden;

      & > div {
        float: left;
      }

      .cart-th1 {
        width: 25%;

        input {
          vertical-align: middle;
        }

        span {
          vertical-align: middle;
        }
      }

      .cart-th2 {
        width: 25%;
      }

      .cart-th3,
      .cart-th4,
      .cart-th5,
      .cart-th6 {
        width: 12.5%;
      }
    }

    .cart-body {
      margin: 15px 0;
      border: 1px solid #ddd;

      .cart-list {
        padding: 10px;
        border-bottom: 1px solid #ddd;
        overflow: hidden;

        & > li {
          float: left;
        }

        .cart-list-con1 {
          width: 4.1667%;
        }

        .cart-list-con2 {
          width: 25%;

          img {
            width: 82px;
            height: 82px;
            float: left;
          }

          .item-msg {
            float: left;
            width: 150px;
            margin: 0 10px;
            line-height: 18px;
          }
        }

        .cart-list-con3 {
          width: 20.8333%;

          .item-txt {
            text-align: center;
          }
        }

        .cart-list-con4 {
          width: 12.5%;
        }

        .cart-list-con5 {
          width: 12.5%;

          .mins {
            border: 1px solid #ddd;
            border-right: 0;
            float: left;
            color: #666;
            width: 6px;
            text-align: center;
            padding: 8px;
          }

          input {
            border: 1px solid #ddd;
            width: 40px;
            height: 33px;
            float: left;
            text-align: center;
            font-size: 14px;
          }

          .plus {
            border: 1px solid #ddd;
            border-left: 0;
            float: left;
            color: #666;
            width: 6px;
            text-align: center;
            padding: 8px;
          }
        }

        .cart-list-con6 {
          width: 12.5%;

          .sum {
            font-size: 16px;
          }
        }

        .cart-list-con7 {
          width: 12.5%;

          a {
            color: #666;
          }
        }
      }
    }
  }

  .cart-tool {
    overflow: hidden;
    border: 1px solid #ddd;

    .select-all {
      padding: 10px;
      overflow: hidden;
      float: left;

      span {
        vertical-align: middle;
      }

      input {
        vertical-align: middle;
      }
    }

    .option {
      padding: 10px;
      overflow: hidden;
      float: left;

      a {
        float: left;
        padding: 0 10px;
        color: #666;
      }
    }

    .money-box {
      float: right;

      .chosed {
        line-height: 26px;
        float: left;
        padding: 0 10px;
      }

      .sumprice {
        width: 200px;
        line-height: 22px;
        float: left;
        padding: 0 10px;

        .summoney {
          color: #c81623;
          font-size: 16px;
        }
      }

      .sumbtn {
        float: right;

        a {
          display: block;
          position: relative;
          width: 96px;
          height: 52px;
          line-height: 52px;
          color: #fff;
          text-align: center;
          font-size: 18px;
          font-family: "Microsoft YaHei";
          background: #e1251b;
          overflow: hidden;
        }
      }
    }
  }
}
</style>